/* ===== CRM System - Mobile Responsive CSS ===== */

/* ===== Mobile Detection Helper ===== */
.mobile-only { display: none !important; }
.desktop-only { display: initial; }

/* ===== Breakpoint: 768px ===== */
@media (max-width: 768px) {

    /* --- Show/Hide --- */
    .mobile-only { display: block !important; }
    .desktop-only { display: none !important; }

    /* --- Body & Global --- */
    body {
        font-size: 14px;
        -webkit-tap-highlight-color: transparent;
        -webkit-text-size-adjust: 100%;
    }

    /* === App Layout === */
    .app-layout {
        display: block;
        padding-bottom: 60px; /* space for bottom nav */
    }

    /* --- Sidebar -> Drawer --- */
    .sidebar {
        transform: translateX(-100%);
        transition: transform 0.3s ease;
        box-shadow: var(--shadow-lg);
        width: 280px;
    }
    .sidebar.open {
        transform: translateX(0);
    }

    /* Sidebar overlay */
    .sidebar-overlay {
        display: none;
        position: fixed;
        top: 0; left: 0; right: 0; bottom: 0;
        background: rgba(0,0,0,0.5);
        z-index: 99;
    }
    .sidebar-overlay.show {
        display: block;
    }

    /* --- Main Content --- */
    .main-content {
        margin-left: 0 !important;
        width: 100%;
    }

    /* --- Topbar --- */
    .topbar {
        padding: 12px 16px;
        position: sticky;
        top: 0;
        z-index: 50;
    }
    .topbar h2 {
        font-size: 17px;
    }
    .topbar-actions {
        gap: 8px;
    }
    .topbar-actions .btn-sm {
        padding: 6px 12px;
        font-size: 12px;
    }
    /* Hide long welcome text on mobile */
    .topbar-actions > span:first-child {
        max-width: 120px;
        overflow: hidden;
        text-overflow: ellipsis;
        white-space: nowrap;
    }

    /* --- Mobile Menu Button (Hamburger) --- */
    .mobile-menu-btn {
        display: flex;
        flex-direction: column;
        justify-content: center;
        gap: 4px;
        width: 36px;
        height: 36px;
        border: none;
        background: transparent;
        cursor: pointer;
        padding: 0;
        margin-right: 8px;
        border-radius: var(--radius);
        transition: background 0.15s;
    }
    .mobile-menu-btn:active {
        background: var(--gray-100);
    }
    .mobile-menu-btn span {
        display: block;
        width: 20px;
        height: 2px;
        background: var(--gray-700);
        border-radius: 2px;
        margin: 0 auto;
        transition: all 0.3s;
    }
    .mobile-menu-btn.active span:nth-child(1) {
        transform: translateY(6px) rotate(45deg);
    }
    .mobile-menu-btn.active span:nth-child(2) {
        opacity: 0;
    }
    .mobile-menu-btn.active span:nth-child(3) {
        transform: translateY(-6px) rotate(-45deg);
    }

    /* --- Content Area --- */
    .content-area {
        padding: 16px;
    }

    /* --- Stats Grid --- */
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 12px;
        margin-bottom: 16px;
    }
    .stat-card {
        padding: 14px 16px;
        flex-direction: column;
        text-align: center;
        gap: 8px;
    }
    .stat-icon {
        width: 40px;
        height: 40px;
        font-size: 18px;
    }
    .stat-value {
        font-size: 22px;
    }
    .stat-label {
        font-size: 12px;
    }

    /* --- Charts Grid --- */
    .charts-grid {
        grid-template-columns: 1fr;
        gap: 16px;
        margin-bottom: 16px;
    }

    /* --- Cards --- */
    .card {
        border-radius: var(--radius);
    }
    .card-header {
        padding: 14px 16px;
    }
    .card-header h3 {
        font-size: 14px;
    }
    .card-body {
        padding: 16px;
    }

    /* --- Tables --- */
    .table-wrap {
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
    }
    table {
        min-width: 500px;
    }
    th {
        padding: 10px 12px;
        font-size: 11px;
    }
    td {
        padding: 10px 12px;
        font-size: 13px;
    }

    /* --- Toolbar --- */
    .toolbar {
        flex-direction: column;
        align-items: stretch;
        gap: 12px;
    }
    .toolbar-left {
        flex-direction: column;
        gap: 8px;
    }
    .search-box {
        max-width: 100%;
    }
    .search-box input {
        padding: 10px 12px 10px 36px;
        font-size: 14px;
    }

    /* --- Kanban --- */
    .kanban-board {
        gap: 12px;
    }
    .kanban-column {
        min-width: 240px;
    }

    /* --- Forms --- */
    .form-row {
        grid-template-columns: 1fr;
        gap: 12px;
    }
    .form-group label {
        font-size: 12px;
    }
    input[type="text"], input[type="email"], input[type="password"],
    input[type="tel"], input[type="url"], input[type="number"],
    input[type="date"], input[type="datetime-local"], select, textarea {
        padding: 12px 14px;
        font-size: 16px; /* prevent iOS zoom */
    }

    /* --- Modal --- */
    .modal {
        width: 95%;
        max-width: 95%;
        border-radius: var(--radius);
        max-height: 90vh;
    }
    .modal-header {
        padding: 16px 20px;
    }
    .modal-header h3 {
        font-size: 16px;
    }
    .modal-body {
        padding: 20px 16px;
    }
    .modal-footer {
        padding: 12px 16px;
        flex-direction: column-reverse;
        gap: 8px;
    }
    .modal-footer .btn {
        width: 100%;
        justify-content: center;
    }

    /* --- Pagination --- */
    .pagination {
        gap: 2px;
        flex-wrap: wrap;
    }
    .pagination button {
        padding: 8px 10px;
        font-size: 12px;
    }

    /* --- Detail Sections --- */
    .detail-grid {
        grid-template-columns: 1fr 1fr;
        gap: 8px;
    }
    .detail-item {
        padding: 10px 12px;
    }

    /* --- Toast --- */
    .toast {
        top: 12px;
        right: 12px;
        left: 12px;
        text-align: center;
        font-size: 13px;
        padding: 10px 16px;
    }

    /* === Login Page === */
    .login-page {
        padding: 20px;
    }
    .login-card {
        padding: 32px 24px;
        width: 100%;
    }
    .login-card h1 {
        font-size: 22px;
    }
    .login-card .btn {
        padding: 14px;
        font-size: 15px;
    }

    /* === Landing Page === */
    .landing-header {
        padding: 12px 16px;
    }
    .landing-header .logo span {
        font-size: 18px;
    }
    /* Hide some header buttons on mobile, show menu */
    .landing-header .desktop-only {
        display: none;
    }
    .landing-header .mobile-header-btns {
        display: flex !important;
        gap: 8px;
        align-items: center;
    }
    .landing-header .mobile-header-btns .btn {
        padding: 6px 12px;
        font-size: 12px;
    }
    .landing-hero {
        padding: 48px 20px;
    }
    .landing-hero h1 {
        font-size: 32px;
    }
    .landing-hero p {
        font-size: 15px;
        margin-bottom: 24px;
    }
    .landing-hero .btn {
        padding: 12px 24px;
        font-size: 14px;
    }

    .landing-pricing {
        padding: 40px 16px !important;
    }
    .landing-pricing h2 {
        font-size: 24px !important;
    }
    .landing-pricing > div > div:first-of-type {
        grid-template-columns: 1fr !important;
        gap: 16px;
    }
    .landing-pricing > div > div:first-of-type > div {
        padding: 28px 20px !important;
    }
    .landing-pricing > div > div:first-of-type > div:nth-child(2) {
        transform: none !important;
    }

    .landing-features {
        padding: 40px 16px;
    }
    .landing-features > div > div:last-child {
        grid-template-columns: 1fr !important;
        gap: 16px;
    }
    .feature-card {
        padding: 24px 20px;
    }

    /* Download section */
    #downloadSection {
        padding: 40px 16px !important;
    }
    #downloadSection > div > div:nth-child(3) {
        grid-template-columns: 1fr !important;
    }

    /* Version section */
    #versionSection {
        padding: 40px 16px !important;
    }
    #versionSection > div {
        max-width: 100% !important;
    }

    /* Footer */
    footer {
        padding: 32px 16px !important;
    }
    footer > div > div:first-child {
        gap: 16px !important;
    }

    /* === Bottom Navigation Bar === */
    .mobile-bottom-nav {

    /* === Deploy Guide Page === */
    .deploy-content {
        padding: 60px 16px 40px !important;
    }
    .deploy-content h1 {
        font-size: 22px !important;
    }
    .deploy-section h2 {
        font-size: 17px !important;
    }
    .code-block {
        padding: 12px 14px;
    }
    .code-block code {
        font-size: 12px;
    }
    .info-box {
        padding: 12px 14px;
        flex-direction: column;
        gap: 6px;
    }

    /* === Bottom Navigation Bar === */
    .mobile-bottom-nav {
        display: flex;
        position: fixed;
        bottom: 0;
        left: 0;
        right: 0;
        background: #fff;
        border-top: 1px solid var(--gray-200);
        z-index: 100;
        height: 56px;
        box-shadow: 0 -2px 8px rgba(0,0,0,0.06);
        padding-bottom: env(safe-area-inset-bottom);
    }
    .mobile-bottom-nav-item {
        flex: 1;
        display: flex;
        flex-direction: column;
        align-items: center;
        justify-content: center;
        gap: 2px;
        color: var(--gray-400);
        font-size: 10px;
        cursor: pointer;
        transition: color 0.15s;
        text-decoration: none;
        -webkit-tap-highlight-color: transparent;
    }
    .mobile-bottom-nav-item:active {
        color: var(--primary);
    }
    .mobile-bottom-nav-item.active {
        color: var(--primary);
        font-weight: 600;
    }
    .mobile-bottom-nav-item .nav-icon {
        font-size: 20px;
        line-height: 1;
    }

    /* === Sidebar nav adjustments on mobile === */
    .sidebar-nav {
        padding-bottom: 80px;
    }
    .nav-item {
        padding: 14px 24px;
        font-size: 15px;
    }

    /* === More menu (3-dot) in bottom nav === */
    .mobile-bottom-nav-item.more-btn {
        position: relative;
    }
    .mobile-more-menu {
        display: none;
        position: fixed;
        bottom: 70px;
        right: 12px;
        background: #fff;
        border-radius: var(--radius-lg);
        box-shadow: var(--shadow-lg);
        border: 1px solid var(--gray-200);
        padding: 8px 0;
        z-index: 200;
        min-width: 160px;
    }
    .mobile-more-menu.show {
        display: block;
    }
    .mobile-more-menu-item {
        display: flex;
        align-items: center;
        gap: 10px;
        padding: 12px 20px;
        font-size: 14px;
        color: var(--gray-700);
        cursor: pointer;
        transition: background 0.15s;
    }
    .mobile-more-menu-item:active {
        background: var(--gray-50);
    }
    .mobile-more-menu-item .nav-icon {
        font-size: 18px;
        width: 20px;
        text-align: center;
    }
}

/* ===== Small mobile (<=375px) ===== */
@media (max-width: 375px) {
    .stats-grid {
        grid-template-columns: 1fr;
    }
    .landing-hero h1 {
        font-size: 26px;
    }
    .detail-grid {
        grid-template-columns: 1fr;
    }
}

/* ===== Tablet (769px - 1024px) ===== */
@media (min-width: 769px) and (max-width: 1024px) {
    .stats-grid {
        grid-template-columns: repeat(3, 1fr);
    }
    .charts-grid {
        grid-template-columns: 1fr;
    }
    .content-area {
        padding: 20px;
    }
    .sidebar {
        width: 200px;
    }
    .main-content {
        margin-left: 200px;
    }
}